Feeding drum and chute



May 18, 1954 H. sci-:MID ErAL FEEDING DRUM AND CHUTE Original Fil-ed Dec. 16, 1949 3 Sheets-Sheet 00 ATTORNEY May- 18, 1954 H. SCHMID ET AL 2,678,739

FEEDING DRUM AND CHUTE May 18, 1954 H. scHMlD ET AL FEEDING DRUM AND CHUTE 3 Sheets-Shee'fI 3 Original Filed Dec. 16, 1949 Patented May 18, 1954 UNITED STATES PATENT OFFICE FEEDING DRUM AND CHUTE Original application December 16, 1949, Serial No.

Divided and this application August 21, 1951, Serial No. 242,851

11 Claims.

This invention relates to an improved roasting machine to be used in connection with the retail distribution of coffee by enabling a dealer to keep green coffee in stock and roast it as required or on each saie, so as to be able to oder perfectly fresh roasted coffee to individual customers.

An object is to provide a coiee roasting machine having a hopper containing coiTee to be roasted, and parts for delivering a predetermined quantity from the hopper to the roasting member when the temperature within the member reaches the proper heating level.

Another object is to provide a coffee roasting machine with hopper and parts comprising a rotatable drum between the hopper and the roasting member, in combination with a chute which is moved to connect the loaded drum with the roasting member at the beginning of each operation; and thus charge the member with coiee to be roasted.

Yet a further object is to provide a coiiee roaster having a chute to deliver the coffee to the roasting member, and parts for shifting the chute after the roasting into position to deliver the coiee to a bin or receptacle.

The nature of the invention is fully described hereinafter and the preferred firm of the invention is illustrated in the accompanying drawings. But thidisclosure is explanatory only, and we may vary details of construction without departingr from the principle of the machine.

`This application is a division of our application A Serial No. 133,427, for a Coffee Roaster, led December 16, 1949.

On the drawings:

Figure l is a vertical longitudinal section taken through a coffee roasting machine containing our invention.

Figure 2 is a section on line 2--2 of Figure l, showing part of the operating mechanism of the apparatus.

Figure 3 is a section on line 3-3 of Figure 1, showing more of the operating members.

Figure 4 is a plan of the drum which controls the loading of the roaster.

Figure 5 is a section of a detail, on line 5-5 of Figure 3.

Figure 6 is a side view of the controlling drum with cam ribs thereon; and

Figure '7 illustrates a detail.

The roaster and its adjuncts comprise a housing l. The coffee is roasted in a heater consisting of a chamber enclosing a rotating cylinder 2. At the top of the housing is a bin or hopper 3 for the green coiee beans, which are transferred to the heater; and afterwards piled in the base or lower part 4 of the roaster; from which they are lifted by a suitable conveyor, to be ground in a casing or section 5. The passage of the green coffee from the bin 3 to the roasting cylinder 2 is regulated by a measuring drum 6; and the admission of the unroasted beans to the cylinder 2 is controlled by a chute l, which automatically assumes loading and discharge position at the beginning and end of each roasting cycle. When the contents of the cylinder 2 have been treated as required they are delivered to an agitator 8 in a casing on the housing l, and iinally dropped through a conduit i0 into the base section 4, which contains an inclined plate I l which directs the roasted beans into a suitable receptacle.

To the casing 9 of the agitator is connected a conduit it, through which the husks covering the roasted beans are discharged into a removable drawer (not shown) at the bottom oi the roaster. The vapors of the coffee when being roasted are drawn od through a flue l1 into a casing I3 containing a fan I9; and conducted away through a flue 2t. The flue Il of course leads from the heating chamber.

The hopper 3 for the green coffee has a sloping bottom 2l with a delivery opening at one side to register with a pocket or chamber 22 in the measuring and loading drum 6, that is just above the roasting cylinder 2. This drum is mounted to turn on a stud or journal 23, in a projection or foot bearing 2li in the housing. This bearing is part of a xed horizontal transverse partition 25 in the housing over the cylinder 2. The chamber 22 is open at the upper and lower end, and after receiving coffee from the bin or hopper VV3, the drum 6 turns and discharges the green coiee beans through an outlet 26 in the partition 25. The tcp of the drum 6 is closed except for the pocket 22, and at the bottom thereof are external gear teeth 21 extending entirely around the circumierence thereof to be engaged by a pivoted pawl at the end of a rocking lever to be described later for effecting rotation of the drum asv required. The teeth 21 have inclined forward and abrupt rear faces.

Aflixed to the partition or floor 25 under the hopper 3 is a bearing lug 28 carrying a bolt or screw which serves as a pivot or fulcrum for a rocker or lever arm 29 having at one end a roller 30. This roller engages a cam track Si (Figure 6) on the cylindrical outer face of the drum 6. This track is level at the top, but its ends are inclined in opposite directions. At the rear of the can;

track is an inclined guard rib 32 on the drum to depress the lever 29. The opposite end of the lever 29 is pinned to a rod 33 which passes down through an opening in the floor 25 and is pinned at its lower end to a segmental gear 35, mounted on a xed journal 35. (See Figure 3.) The journal i between the gear teeth and the point of connection of the gear to the rod 33. This gear 34 meshes with a pinion 36 having a hub 31 that is concentric with the axis of the roasting cylinder 2.

In line with the cylinder 2, the Wall of the housing has a large opening 38, which is closed by the casing 9 of the agitator 8. Over this opening between the casing 9 and housing I lies the closure plate 39 for the inner end of the casing 9, having a hollow boss 45 in the center which bears the hub 31 of the gear 3S. The casing 9 has a central bearing 4| in the outer end supporting one end of a stub shaft 42 upon which the agitator is mounted. This shaft has keyed connection with the end of the shaft 43 carrying the roasting cylinder 2. At the side of the plate 39 is an arc-shaped opening 44 extending from a point about the level of the shaft 43 down past a point directly below it. The plate 39 carries the bearing 40 at the center. The free end of the chute 1 as it rotates, discharges the contents of the cylinder through it into the casing 9 when the roasting is finished.

The plate 39 has a xed curved conical inner rim or ange 46 around the edge of the opening 44 nearest the circumferential edge of the plate 39, and projecting into the housing as far as the adjacent end of the cylinder 2; beyond the rotatable chute 1. This rim 46 is about as long as the opening 44 and can be welded in place on the plate 39. Also on the face of the plate 39 presented to the chute, is a rib 41 encircling the gears 34 and 3G; the plate 39 bears the pivot stud 35 for the gear 34 in the space surrounded by the rib 41. Over the rib 41 and the gear 34 lies a thin cover plate 41h with a curved slot 45. The pin 35 joining the rod or link 33 to the gear 34 projects through this slot, so that the rod is in the free space between the cover plate 4117 and the chute 1. The cover plate 41b has a large opening for the gear 36. The chute 1 is made rigid with the gear 36. The rib is widened above and below the thinned area 41a; presenting vertical shoulders 41e.

On the face of the cover plate 41b is another plate 49, having a conical rim 5E! along one edge which forms a continuation of the rim 44 from the lower end thereof up to the outlet 26 for the drum 6. At both ends of the rim 49 are projections 5l that ena-ble the plate 49 to be bolted or otherwise secured over to the rib 41 to the plate 39. The rim 5D is cut away on its outer edge adjacent the slot 45 to give clearance to the rod 33.

The end of the cylinder 2 adjacent the chute 1 has an open spider 52 through which it discharges. This spider is covered by the chute 1 in the position shown on Figure 3 when the cylinder 2 is loading. The roller 39 then runs on the tops of the teeth 21, the lever being depressed and the rod lifted as in Figure 5.

When the drum 6 revolves it fills with green coffee from the hopper 3, the coffee dropping into the pocket 22 at each revolution; and the coffee is discharged as the drum rotates and the pocket comes into registry with the outlet opening 29 in the partition 25. While the drum is turning, the roller also runs on the cam 3l, and depresses the rod 33 which rises again when the end of the cam is reached and the roller is depressed by the rib 32. The gear 34 thus oscillates the gear 36 through a part turn each time, so that the chute 1 registers with the outlet 26 to ll the cylinder 2 and then makes a part turn to its lowermost position to guide the roast coffee from the cylinder 2 into the casing 9 through the long arcshaped opening 44.

The opposite end of the shaft `33 is enveloped by a sleeve 55. The shaft has key or clutch connection (not shown therewith). The sleeve will therefore turn the shaft but the shaft can be detached from the sleeve like the stub shaft 42.

The end of the cylinder 2 adjacent the sleeve 55 is closed by a hanged-over metal disk or plate 53, and the sleeve 55 is mounted in a suitable bushing or bearing 54 in the adjacent wall of the housing. The cylindrical wall of the cylinder 2 is made of heat resistant material 56, and the plate has a disked central part through which the shaft 43 passes. The shaft 43 has a spring washer and nut indicated at 58 between the sleeve 55 and the disk 53 to press against the disk and hold it in place on the cylinder 2.

The spider 52 is fixed to the shaft 43 at the end of the cylinder adjacent the chute 1. When the casing 9 is dismounted, the stub shaft 42 can be removed with it, and when the plate 39 is taken off the housing, the cylinder 2 can be pulled out through the opening 39. The main part of the shaft 42 then comes out with the cylinder, being pulled out of the sleeve 55 which can remain in place, but can also be taken out when necessary.

The outer end of the sleeve 55 carries a gear 69, which is turned -by a gear 6l on a shaft 62, mounted in a bearing 63 in the wall of the housing I. On the outer end of this shaft is a pulley 64, which is rotated by a belt G5. This belt is operated by a pulley 65 of an electric motor 61 on the outside of the housing; and a belt tightening pulley 68 may be mounted on the housing to keep the belt in rm engagement with the pulleys 64 and 55. Fixed to the outer end of the sleeve 55 to be rotated thereby, between the pulley 94 and the gear G0, is a cam B9, which operates a rocker lever 10 on a pivot pin 1|. See Figures 2 and '1. This lever carries at its outer end a pivoted pawl 12. To the pawl is attached a spring 13 which connects the pawl to the plunger 15 of a solenoid 15. Normally the pawl is not in position to engage the teeth 21 of the drum S, but when the solenoid is energized, the plunger 14 pulls the spring 13 so that the upper end of the pawl will push against the teeth and turn the drum every time the lever 10 rocks. On the reverse movement of the lever, the pawl slips idly back over the inclined faces of the teeth 21. The solenoid is supported by a bracket 1t on the framework of the housing, secured thereto by any suitable means; and the lever is actuated by the cam 69 against the tension of a spring 11 fixed to the lever and the housing I, which of course mounts the pivot pin 1 i.

The outer end of the sleeve 55 also passes through a plate 1S of aluminum. This plate also has a bearing in its lower end for the outer end of the shaft 92 carrying the gear 6i. The plate is secured to the housing by screws 19 and is between the gear 69 and the cam 99. Mounted on the plate are binding posts 80, to engage slip rings 9i on the cam 69. These rings are connected by wires 82 which pass into the cylinder 2 through a bore 83 in the shaft 43 and connect to a thermostat member 84 in the cylinder 2, .being formed into a cable 32 in the bore 83.

In the sloping bottom 2| of the hopper is an opening 85 which is covered by a flexible diaphragm St. At the center of this diaphragm is a fixed terminal El' which cooperates with a movable switch terminal 88. When the hopper contains more than a minimum quantity of coiee, the terminals 3i and 88' are closed by the weight oi the required quantity of green coffee in the bin 3, but when this quantity is not present, the terminals 3l and 88 separate and the operation of the roster stops.

The terminal 38 is mounted on an insulating member 38a carried by the bottom of the bin 3 on its lower face.

rllhe cylindrical surface of the drum t has three cams Si), 9| and 92 at the beginning of the cam track 3| on the drum. rEhe first cam is a short one, but the other two are long, and they are all flush with one another at the ends adjacent the rising part of the track Si. These cams control switches S3, gli and 95 respectively, in circuits which are described in our prior application aforesaid herein. The switches are mounted on a post Qt on the partition 25. The cam strips have slotted ends 9i which receive fastening screws 93 affixing them to the drum; and by virtue of slots in the ends of the cams receiving the screws, the positions of the cams can be adjusted.

rihe housing i comprises sections one of which Sie has the partition 25 as its top, and contains the roasting cylinder 2. To one outside face ci this section 99, usually at the left of the operator (Figure l) as he faces the iront or" the housing (Figure l), the casing s is anixed. On the section 99 rests the upper section lilo containing the bin 3, and detachably secured to the section 99 in any suitable way. The section et stands on the base section; and is secured thereto as by lugs on the base section il, to be inside the section 99 at its lower edge, and attached by screws. (See Figure 1.) At the one side oi the section 99, the top oi the base section l is a little lower, vand thereon stands the section 5. This section 5 is separated from the section t9, and the pulley and other parts on the outside of the section 99 shown in Figures 1 and 3 are between the sections 99 and 5.

The section et carries the motor 5l, and casing i9 with ian i8 which, as shown in Figure 1, is driven by the motor 61, that is enclosed in a casing |52. The side oi the section 99 opposite that bearing the motor tl, has a window |93, leading to the heating chamber containing the cylinder 2, and the section ili has windows ltl and |95 above the casing 9 and section 5 respectively. The section 5 has one or more windows it? near its top, which has a removable closure |t8. The space between the sections t9 and t is filled by a removable shield |639 which covers the moving parts therein. The sections can easily be dismounted to give convenient access to all parts. The bin 3 also has a top opening with a closure |08.

The section 5 has a platform scale H2. This section contains the grinding mechanism and a motor |13 to operate it, and bears switch l ill and an ordinary electric outletfnot shown, for the prongs of a plug that is attached to a cord conductor so that electric current may iiow to energize the motor inside. This grinding mechanism is fully disclosed and deiined in our copending application for a separate patent thereon, Serial No. 133,426, nled December 16. 1949.

The inside of the section 99 constitutes a roasting chamber enveloping the cylinder 2. See Figure 1. One end of this is substantially closed adjacent the casing Q by a partition H4 of heat insulating material. The top, bottom, sides and opposite end of this chamber within section 99 are of similar material, as indicated at l l5. One or more heating lamps llt are mounted at the bottom of this chamber and several resistance heaters l il are mounted in it adjacent the roasting cylinder 2. lThe partition llt has an opening at the top receiving the end 52 of the cylinder 2 and clearing the outlet '2% of the drum 6.

The inside oi the casing 9 contains a central annular rib |22, which is conical on both faces and surrounds the bearing 4|. At its topmost point this rib has an opening |24 in its outer face, to which the delivery pipe i0 is coupled. The roasted coiiee beans are discharged through this opening down in to the base 4, but the husks are retained. These drop down to the bottom of the casing and fall into the nue I5. The agitator 8 has a circular ring |25 joining the outer ends of the vanos or blades and having openings |26 through which the pieces of the husks drop into the nue l5.

rIhe arrangement of circuits, switches and other controlling devices is fully set forth in our aforesaid applicaition, Serial No. 133,427. When the main switch is closed and the weight oi the coffee in the bin is suiiicient to close the switch points d8a- 8819, the lamps HE and heaters will be energized. The motor Sl then starts and the cylinder 2 Ibegins revolving.

When the motor starts, the drum does no-t at rst rotate because the solenoid 15 is not energized. But as the temperature in the heating cylinder 2 increases, the thermostat S4 therein closes, and a circuit is established through suitable connections described, in our application Serial No. 133,427 to the switch B4, now closed by cam 9|. rThis action establishes another circuit the effect or" which is such that any erratic operation due to hunting of the thermostat 84 as the temperature in the machine may vary is obviated.

At starting there is a warm-up period during which the switch 93 is held open by the cam 90. The feeding drinn 6 is in such position, and the switches 94 and S5 are so constructed that the rst is closed and the latter open, each with a roller on cams 9i and 92 respectively. As soon as current iiows through the lamps I It and heater members H1, and as the temperature in the roasting chamber or oven rises, the motor begins to rotate and turn the cylinder 2. The drum 6, however, does no-t revolve till later. Normally when the switches 94 and 95 do not have their rollers on the cams, the switch 94 is open and the switch 95 is closed; at the .beginning the switch ad: is closed and switch 25 is open. At the end or the warm-up period the thermostat 84 closes; and as above stated the lamps IE6 and heater members are out out; and erratic operation due to hunting of the thermostat is obviated as set iorth above. Another circuit is then established through solenoid l5 to lift the plunger 14 and cause the pawl 'I2 to engage the teeth 2'? on the drum t. The feeding drum now rotates, bringing its pocket 22 over the outlet 2S to iill the cylinder 2 with green beans. The roller 3i) rides on the top-s oi the projecting teeth 2l as the pocket 22 passes the ouitlet 26; hence the dumping rod 33 is lifted as in Figure 3 and the chute 1 is up and guides the green beans into the cylinder v2. These beans are cool, and they cause the temperature of the roasting chamber to drop, Aso that the thermostat 84 opens. The switch 94 has already opened because it has passed the cam 9i, but the switch 95 is closed after leaving the cam 92. Through the switch 95 current ows to the solenoid l5, till in the rotation of the drum the green coffee has been delivered to the cylinder 2 and the thermostat 84 has cooled. The solenoid 'i5 is then cle-energized and the drum stops, because the plunger 'i4 sinks and the pawl l2 swings back from the teeth 21. But now a heater circuit through ythe lamps l l and heaters Hl is restored, and the motor d'1 keeps running,

The cylinder 2 is thus kept rotating till the contents are fully roasted, and then the thermostat S6 again closes. The lamps H6 and heating devices Hl are out out, as before, but the switch 94 is still open and the solenoid I5 now receives e current `by way of switch 35 which is still closed, and the drum again rotates. The lever 29 is lifted and the dump rod 33 lowered to swing the chute 'l into registry with the opening i4 so that the cylinder -2 can be emptied. When the cam S2 reaches the switch 95, this switch is opened, and no more current can flow by way of vthis switch to the solenoid 75. The drum then stops with switches 94 and 95 again on the front ends of the cams 9! and :12, and the pocket 22 in position to receive again from the bin or hopper 3. The operation can take place with switch lll-SB closed due to weight oi' beans on diaphragm. If this switch is open due to lack of beans by weight, the machine will nish roasting. The drum then rotates past roasting position, the circuit being broken by short cam 9i] opening switch di. et this point the drum has operated the dump lever 33, swinging the chute l down to position, and discharging the roasted beans. All circuits are broken except through. the motor and blower which are kept in operation until the cylinder 2 cools.

The section lll has an opening i 2l at the front to expose the drum e and the cams thereon. As above stated, the part of the shaft 43 within the sleeve 55 is made separable like the end 42 for convenient dismounting of the cylinder 2. Varies |28 in the cylinder agitato the coffee beans during roasting and are set on a diagonal to facilitate emptying the cylinder through the chute into the casing 9.

The upper section lila has one or more lamps indicated at 29 inside adjacent one of the openings, such as the opening H54. This lamp is in circuit with the motor el, and is illuminated as long as the motor is energized. A thermally re sponsive switch can be included in the circuit to make the lamp i flash instead of being steadily illuminated, if desired. Of course, such a lamp can be placed at any advantageous point in the section l, and additional windows can be formed in the remaining of the section 69.

The bracket 76 supporting the solenoid 'I5 also mounts an arm 39 which carries la terminal element i3 to which the wires for the solenoid are attached. In the circuit of the apparatus is an electric counter |32. These parts are fully explained in our aforesaid application Serial No. 133,427, and are not included in the claims of this application. The arm I3@ also carries a roller pawl 33 to engage the teeth 2'! and hold the drum 6 motionless when the pawl 72 is out of operating position.

Having-described our invention, what we believe to be new is:

1. Roasting apparatus comprising a horizontal cylinder, a hopper above said cylinder, a controlling member between the hopper and the cylinder, said member being mounted to rotate about a vertical axis, Va casing into which the cylinder delivers, a movable chute adjacent the cylinder, means for operating said member, and means for actuating the chute to guide a charge into the cylinder before roasting 'and from the cylinder into said casing when the roasting operation is inished.

2. Roasting apparatus comprising a horizontal cylinder, a hopper above said cylinder, a controlling member between the hopper and the cylinder, said member being mounted to rotate about a vertical axis, -a casing into which the cylinder delivers, a movable chute adjacent the cylinder, means for operating said member, and means for actuating the chute to guide a charge into the cylinder before roasting and from the cylinder into said casing when the roasting operation is nnished, said actuating means for the chute compricing connections between the chute and said member.

3. Roasting apparatus comprising a horizontal cylinder, a hopper above said cylinder, a rotatable drum having a pocket for receiving a charge from the hopper, said drum being mounted to turn about a vertical axis, means for periodically moving said drum, means for rotating the cylinder and connections between said last-named means and said means for periodically moving said drum, electrical means for controlling said moving means, a casing, a chute movable into one position to guide the charge from the drum to the cylinder and into another position to deliver from the cylinder to the casing, connections for actuating said chute to assume said positions, said connections comprising a rod and a cam on the drum to reciprocate the rod, switches for said electrical means, and cams on the drum to control the switches.

4. Roasting apparatus comprising a hopper, a horizontal roasting cylinder supplied from said hopper and placed below the hopper, a movable feed member between the hopper and the cylinder, said member being mounted to rotate about a vertical axis, electrically controlled means for operating said member, said hopper having an opening in its bottom, a diaphragm over said opening and switch terminals controlled by the weight of the contents of said hopper in said diaphragm.

5. Roasting apparatus comprising a hopper, a horizontal cylinder below the hopper, a rotatable drum for feeding the contents of the hopper into the cylinder, said drum being mounted to turn about a vertical axis, ratchet teeth on the drum, means for operating the cylinder and the drum comprising a cam and a lever having a pivoted pawl to engage said teeth, a magnetic coil having an armature connected to said pawl, and switches adjacent the drum and operated thereby to control said coil.

6. Roasting apparatus comprising a housing having a bin, a horizontal roasting cylinder below said bin, a rotatable feed drum between the bin and said cylinder, said drum being mounted to turn about a vertical axis, said drum having ratchet teeth on its periphery, a lever bearing a pawl to engage said teeth, a solenoid having a plunger connected to said Dawl to move the pawl to actuate the drum, a switch on the housing to connect said solenoid to a supply circuit, a motor for said cylinder and gearing coupling the motor to said cylinder and lever.

7. Roasting apparatus comprising a housing having a bin, a horizontal roasting cylinder below said bin, a rotatable feed drum between the bin and said cylinder, said drum being mounted to turn about a vertical axis, said drum having ratchet teeth cn its periphery, a lever bearing a pawl to engage said teeth, a solenoid having a plunger connected to said pawl to move the pawl to actuate the drum, a switch on the housing to connect said solenoid to a supply circuit, a motor for said cylinder and gearing coupling the motor to said cylinder and lever, said gearing comprising a cam rotating with said cylinder and engaging said lever.

8. Roasting apparatus comprising a housing having a bin, a horizontal roasting cylinder below said bin, a rotatable feed drum between the bin and said cylinder, said drum being mounted to turn about a vertical axis, said drum having ratchet teeth on its periphery, a lever bearing a pawl to engage said teeth, a solenoid having a plunger connected to said pawl to move the pawl to actuate the drum, a switch on the housing to connect said solenoid to a supply circuit, a cam on the drum to control said switch, a motor to operate said cylinder, a shaft for the cylinder connected to the motor and a cam on the shaft to control said lever.

9. Roasting apparatus comprising a housing having a bin, a horizontal roasting cylinder below said bin, a rotatable feed drum between the bin and said cylinder, said drum being mounted to turn about a vertical axis, said drum having ratchet teeth on its periphery, a pivoted lever bearing a pawl to engage said teeth, a solenoid having a plunger connected to said pawl to move the pawl to actuate the drum into position for loading the cylinder, a switch on the housing for said solenoid, a cam on the drum to control said switch, a motor for said cylinder gearing coupling the motor to said cylinder and lever, the drum carrying a second cam, and a second switch on the housing controlled by said last-named cam to close a circuit and energize the solenoid and continue the operation of said pawl to return the drum to starting position.

10. Roasting apparatus comprising a housing having a bin, a horizontal roasting cylinder below said bin, a rotatable feed drum between the bin and said cylinder, said drum being mounted to turn about a vertical axis, said drum having ratchet teeth on its periphery, a lever bearing a pawl to engage said teeth, a solenoid having a plunger connected to said pawl to move the pawl to actuate the drum, a switch on the housing for said solenoid, a cam on the drum to control said switch, a motor for said cylinder gearing coupling the motor to said cylinder and lever, said drum having a pocket open at the top to be filled from said bin, and said housing having a supporting .door for the drum with an outlet through which the drum delivers to the cylinder.

1l. Roasting apparatus comprising a housing having a bin, a horizontal roasting cylinder below said bin, a rotatable drum between the bin and said cylinder, said drum being mounted to turn about a vertical axis, said drum having ratchet teeth on its periphery, a lever bearing a pawl to engage said teeth, a solenoid having a plunger connected to said pawl to move the pawl to actuate the drum, a switch on the housing to connect said solenoid to a supply circuit, a cam on the drum to control said switch, a motor for said cylinder in said circuit, gearing coupling the motor to said cylinder and lever, said drum having a pocket open at the top to be nlled from said bin, and said housing having a supporting floor for the drum with an outlet through which the drum delivers to the cylinder, a movable chute adjacent the cylinder, under said floor, gearing to swing chute to connect the outlet to the cylinder, a rod connected to said gearing, a lever on said housing, and a cam on the drum to control the lever and the rod.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,089,663 Richeson Aug. 10, 1937 2,188,969 Waldvogel Feb. 6, 1940 2,572,678 Torres Oct. 23, 1951 FOREIGN PATENTS Number Country Date 120,871 Austria Jan. 26, 1931 

